|How do I know what type of grass I have.|
|In your area you are likely to be growing cool season lawn grasses. To identify specific types, I would suggest you consult with your local Penn State county extension. Or you can try to match the blades of the most common grasses with images. The following web site from North Carolina State University will help with that. You will probably need to cut and paste the complete url into your browser to make it work correctly.
I hope this helps!